Answer:
2n + 5
Step-by-step explanation:
Twice a number (n): 2nFive more than twice a number: 2n + 5I hope this helps!
In the number 2,222. 222, what is the difference between the 2 in the tens place and the 2 in the column to its left?.
The difference between the 2 in the tens place and 2 to its left column in the given number 2,222.222 is 180.
According to the number system, a number can be written in its expanded form according to their pace value in the chart.
2,222.222 can be written as 2×1000+2×100+2×10+2X1+2×1/10+2×1/100+2×1/1000
The place value of 2 in the tens place in given number 2,222.222 = 20
The place value of 2 in its left column in the given number 2,222.22 = 200
Difference between the place of 2 in tens place and 2 in its left column
= 200 - 20
= 180
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HELP ME ASAP I NEED HELP
Answer:
distance = 7.07 units
Step-by-step explanation:
x difference = 7
y difference = -1
using the Pythagorean theorem:
7² + -1² = d²
d² = 49 + 1 = 50
d = 7.07
Answer:
7.1
Step-by-step explanation:
distance between the x is 7 and y is 1
And to find the hypotenuse, you use the quadratic formula, 7^2 + 1^2 = c^2
c=50
and take the square root, which is 7.071, rounds to 7.1
An angle measures 46° less than the measure of its complementary angle. What is the measure of each angle?
Answer:
68 and 22 degrees
Step-by-step explanation:
Complimentary angles sum to 90
x + (x-46) = 90
2x = 90 + 46
2x = 136
x = 68 and the other is 68 - 46 = 22
Solve for v -31 = 3v + 9 - 8v
v = 8
Explanation:Given:
-31 = 3v + 9 - 8v
To find:
the value of v
To determine v, we will collect like terms:
\(\begin{gathered} -31\text{ = 3v + 9 - 8v} \\ -31\text{ = 3v - 8v + 9} \\ -31\text{ = -5v + 9} \end{gathered}\)subtract 9 from both sides:
\(\begin{gathered} -31\text{ - 9 = -5v + 9 - 9} \\ -40\text{ = -5v} \\ \\ divide\text{ both sides by -5:} \\ \frac{-40}{-5}\text{ = }\frac{-5v}{-5} \\ division\text{ of same signs give positive sign} \\ v\text{ = 8} \end{gathered}\)Find the area of the shaded region if the dimensions of the unshaded region are 12ft x 20ft . use 3.14 for π as necessary.
The area of the shaded region = 810.66 ft²
What is rectangle?
A rectangle is a type of quadrilateral that has its parallel sides equal to each other and all the four vertices are equal to 90 degrees. Hence, it is also called an equiangular quadrilateral. Since, the opposite sides are equal and parallel, in rectangle, therefore, it can also be termed as a parallelogram.Area of Shaded region:
(12+2*7)*20 - 12*20 + 3.14*((12+2*7)/2)² =
14*20 + 530.66 =
810.66 ft²
Therefore, the area of the shaded region = 810.66 ft²
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An78swer:
Step-by-step explanation:
Use the extended Euclidean algorithm to express
gcd(144, 89) as a linear combination of 144 and 89
The greatest common divisor (gcd) of 144 and 89 can be expressed as a linear combination of 144 and 89 as follows: gcd(144, 89) = 1 = (-21) * 144 + 34 * 89.
To express the gcd (144, 89) as a linear combination of 144 and 89, we can use the extended Euclidean algorithm. This algorithm finds the gcd of two numbers and also provides coefficients that represent the linear combination.
We start with the given numbers: a = 144 and b = 89.
Apply the Euclidean algorithm to find the gcd:
Divide 144 by 89: 144 = 1 * 89 + 55
Divide 89 by 55: 89 = 1 * 55 + 34
Divide 55 by 34: 55 = 1 * 34 + 21
Divide 34 by 21: 34 = 1 * 21 + 13
Divide 21 by 13: 21 = 1 * 13 + 8
Divide 13 by 8: 13 = 1 * 8 + 5
Divide 8 by 5: 8 = 1 * 5 + 3
Divide 5 by 3: 5 = 1 * 3 + 2
Divide 3 by 2: 3 = 1 * 2 + 1
Divide 2 by 1: 2 = 2 * 1 + 0
The last non-zero remainder obtained is 1, which means the gcd is 1.
Now, we work backwards through the algorithm to find the coefficients:
From 3 = 1 * 2 + 1, we can express 1 as a linear combination of 2 and 3: 1 = 3 - 1 * 2
Substitute 2 = 5 - 1 * 3 from the previous step: 1 = 3 - 1 * (5 - 1 * 3) = 2 * 3 - 1 * 5
Continue substituting until we reach the original numbers:
1 = 2 * 3 - 1 * 5 = 2 * (5 - 1 * 3) - 1 * 5 = 2 * 5 - 3 * 5 = 2 * 5 - 3 * (8 - 1 * 5)
Repeat until we get the desired linear combination:
1 = 2 * 5 - 3 * (8 - 1 * 5) = 2 * 5 - 3 * 8 + 3 * 5 = (-3) * 8 + 5 * 5 - 3 * 8 = 5 * 5 - 6 * 8
Substitute 8 = 13 - 1 * 5: 1 = 5 * 5 - 6 * (13 - 1 * 5) = 11 * 5 - 6 * 13
Repeat the process until we reach the original numbers:
1 = 11 * 5 - 6 * 13 = 11 * (13 - 1 * 8) - 6 * 13 = 11 * 13 - 11 * 8 - 6 * 13 = (-17) * 8 + 11 * 13
Substitute 13 = 21
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how to find the turning point of a polynomial function?
the turning point(s) of a polynomial function by using below steps
To find the turning point of a polynomial function, follow these steps:
1. Determine the degree of the polynomial. The turning point will occur in a polynomial of odd degree (1, 3, 5, etc.) or at most one turning point in a polynomial of even degree (2, 4, 6, etc.).
2. Write the polynomial function in the form f(x) = axⁿ + bxⁿ⁻¹ + ... + cx + d, where n represents the degree of the polynomial and a, b, c, d, etc., are coefficients.
3. Find the derivative of the polynomial function, f'(x), by differentiating each term of the function with respect to x. This will give you a new function that represents the slope of the original polynomial function at any given point.
4. Set f'(x) equal to zero and solve for x to find the x-coordinate(s) of the turning point(s). These are the values where the slope of the polynomial function is zero, indicating a potential turning point.
5. Substitute the x-coordinate(s) obtained in step 4 into the original polynomial function, f(x), to find the corresponding y-coordinate(s) of the turning point(s).
6. The turning point(s) of the polynomial function is given by the coordinates (x, y), where x is the x-coordinate(s) found in step 4 and y is the y-coordinate(s) found in step 5.
By following these steps, you can find the turning point(s) of a polynomial function.
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The blood test for determining coagulation activity defects is called the Prothrombin Time (PT) test.
The blood test for determining coagulation activity defects is called the Prothrombin Time (PT) test. This test measures the time it takes for blood to clot and is used to assess the functioning of the clotting factors in the blood. It is commonly used to evaluate the extrinsic pathway of the coagulation cascade, which involves factors outside of the blood vessels.
The PT test is an important diagnostic tool in hematology and is used to diagnose or monitor conditions that affect blood clotting, such as bleeding disorders or the effectiveness of anticoagulant medications. By measuring the PT, healthcare professionals can determine if there are any abnormalities in the coagulation process and make appropriate treatment decisions.
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a 17 feet ladder is placed against a building. the bottom of the ladder is sliding away from the building at a rate of 5 feet per second. find the rate at which the top of the ladder is slipping down at the instant when the bottom of the ladder is 15 feet from the base of the building.
The rate at which the top of the ladder is slipping down at the instant when the bottom of the ladder is 15 feet from the base of the building is -75/8 feet per second
The length of the ladder = 17
Consider the length of the base as x and the height is h
The rate at which the ladder is sliding = 5 feet per second
dx/dt = 5
Apply the Pythagorean theorem
x^2 + h^2 = 17^2
h^2 = 289 - x^2
h = \(\sqrt{289-x^2}\)
The rate of change of height with respect to x is
dh/dx = - x / (289 - x^2)^(1/2)
dh/dt = dh/dx × dx/dt
Substitute the values in the equation
= - 15 / (289 - 15^2)^(1/2) × 5
= -15/8 × 5
= -75/8 feet per second
Therefore, the rate of change of height when x = 15 is -75/8 feet per second
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Need help with this please.
Write two congruence statements for the congruent triangles. i will give out brainly
Answer:
If two sides in one triangle are congruent to two sides of a second triangle, and also if the included angles are congruent, then the triangles are congruent. ... If in triangles ABC and DEF, AB = DE, AC = DF, and angle A = angle D, then triangle ABC is congruent to triangle DEF.
how do you graph y=-1/2 x + 1
Answer:
\(\mathrm{X\:Intercepts}:\:\left(2,\:0\right)\)
\(\mathrm{Y\:Intercepts}:\:\left(0,\:1\right)\)
\(Slope\:(m)=-\frac{1}{2}\)
what about this one? can this be answered please? : )
Answer:
c. y=7x-2
Step-by-step explanation:
hope this can help
Solve for y
2y - x = 8
Answer:
y=-x+4
Step-by-step explanation:
2y-x=8
2y=-x+8
y=-x+4
i'd like the ratio of cupcakes to my guests to be 4 to 2 and there will be 6 guests
Answer:
12 would be the answer.
Step-by-step explanation:
4:2 as a ration of cupcakes to guests means that there are 2 cupcakes for every person or a 2:1 ratio. If their are 6 guests you multiply both sides by 6 in a 2:1 ration which means the ratio of cupcakes to humans would be 2 x 6: 1 x 6 or 12:6.
The solution is: there must be 12 cupcakes to my guests to be 4 to 2 and there will be 6 guests.
Here, we have,
given that,
the ratio of cupcakes to my guests to be 4 to 2 and there will be 6 guests.
so, we have,
4:2 as a ration of cupcakes to guests means that there are 2 cupcakes for every person or a 2:1 ratio.
If their are 6 guests we multiply both sides by 6 in a 2:1 ration
which means the ratio of cupcakes to humans would be
2 x 6: 1 x 6
or 12:6.
Hence, The solution is: there must be 12 cupcakes to my guests to be 4 to 2 and there will be 6 guests.
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Find the 4th term in the expansion of (a+b)^{10} in simplest form.
Use the following sample to complete the questions below (you can simply copy this and paste it in R to create your sample data in R ): X=c(9.15,9.63,10.81,10.61,10.00,9.29,10.33,9.40,10.43,10.69,10.77) Question 1 [3] 1.1 Calculate the mean of the sample.
X
ˉ
=
n
1
∑
i=1
n
X
i
= 1.2 Calculate the standard deviation of the sample using the following formulas:
S
1
=
n
1
∑
i=1
n
(X
i
−
X
ˉ
)
2
=
S
2
=
n−1
1
∑
i=1
n
(X
i
−
X
ˉ
)
2
=
1.3 Now using S
1
and S
2
calculate the following:
S
1,
X
ˉ
=
n
s
1
=
S
2,X
=
n
s
2
=
Question 2 [5] Now, use the bootstrap to approximate the standard error of the following two statistics: 1) Sample mean
X
ˉ
i.e. estimate
SE
B,X
2) Sample median
X
~
i.e. estimate
SE
B,X
Use the following bootstrap algorithm to approximate the standard error of a sample statistic: 1. Start with the data X
1
,X
2
,…,X
n
from some unknown distribution F i.e. the data given above. 2. Sample (with replacement) from these data to get X
1
∗
,X
2
∗
,…,X
n
∗
. Use the sample() function in R to do this ( run the code? sample to see how this function works). 3. Calculate the statistic for this new data obtained using the sample function e.g. calculate
θ
^
∗
=median(X
1
∗
,X
2
∗
,…,X
n
∗
). 4. Repeat steps 2 and 3 a large number of times (say B=10000 times). This will give you
θ
^
1
∗
,
θ
^
2
∗
,…,
θ
^
B
∗
. 5. Calculate the sample standard deviation of these
θ
^
1
∗
,
θ
^
2
∗
,…,
θ
^
B
∗
values i.e.,
SE
B
=
B−1
1
∑
b=1
B
(
θ
^
b
∗
−
θ
^
⋅
∗
)
2
, where
θ
^
.
∗
=
B
1
∑
b=1
n
θ
^
b
∗
Question 3 [2] Compare the answer of
SE
B,Ω
(calculated in Question 2.1) to your answers of S
1,8
and S
2,8
(calculate in Question 1.3). What can you conclude from this? Question 4 [2] Explain why the bootstrap is a handy tool for any statistician?
The sample is provided as:X=c(9.15,9.63,10.81,10.61,10.00,9.29,10.33,9.40,10.43,10.69,10.77)Calculate the mean of the sampleThe mean is a measure of central tendency that refers to the average of all the values in a sample. To calculate the mean of the given sample in R,
the formula is:mean(X)Where X is the sample dataset. Applying this formula to the given sample X, we get:mean(X) = 10.04636Therefore, the mean of the sample is 10.04636.
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What does the following expression mean? x <= y
As per inequality, it means that the value of x can be less than or equal to y.
Inequality in Mathematics
The two expressions that make up an equation or an inequality are connected in a mathematical statement. The equal sign (=) in an equation denotes the equality of the two expressions. The symbols >, <, ≤, or ≥ are used to denote an inequality, when the two expressions aren't always equal.
Type of Inequality
The given expression, x <= y denotes the type of inequality where the possible values of x are either less than y or equal to less. The value of x cannot be greater than y in any case.
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g(x)=3x-4; find g(-4)
Answer:
g(-4) = -16Step-by-step explanation:
g(x) = 3x - 4
g(-4) means x = -4
g(-4) = 3(-4) - 4 = -12 - 4 = -16
Seventeen out of 20 teens said they eat breakfast every morning. What is the reasonable prediction for the number of teens out of 1,280 who eat breakfast every morning?
A.
340
B.
940
C.
1088
D.
1260
Answer:
It would be 1,088/1,280
Step-by-step explanation:
The answer is 1,088
Which characteristics will not prove that quadrilateral PQRS, drawn in a coordinate plane, is a parallelogram?
The answer is letter C. This is because line PQ and RS does not describe a slope. Because PQ and RS are in straight horizontal lines. So it is impossible for PQ and RS to have a slope or a diagonal form.
Answer:
C
Step-by-step explanation:
t multiplied 3/4 for t= 8/9
Answer: 2/3 or 0.6
Step-by-step explanation:
If 5(1 - 2x) + 25 = 0, then x =
A. 20
B. 15
C. 3
D.-3
Answer:
C
Step-by-step explanation:
5-10x+25=0
5+25=10x
30=10x
x=3
I need help asap with this maths question
Answer:
\(\frac{-x^{2}+5x-1}{2x^{2} -x-1}\)
Step-by-step explanation:
What is the probability that the sample proportion is between 0.2 and 0.42?
The probability that the sample proportion is between 0.2 and 0.42 can be calculated using the standard normal distribution.
To calculate the probability, we need to assume that the sample proportion follows a normal distribution. This assumption holds true when the sample size is sufficiently large and the conditions for the central limit theorem are met.
First, we need to calculate the standard error of the sample proportion. The standard error is the standard deviation of the sampling distribution of the sample proportion and is given by the formula sqrt(p(1-p)/n), where p is the estimated proportion and n is the sample size.
Next, we convert the sample proportion range into z-scores using the formula z = (x - p) / SE, where x is the given proportion and SE is the standard error. In this case, we use z-scores of 0.2 and 0.42.
Once we have the z-scores, we can use a standard normal distribution table or a statistical software to find the corresponding probabilities. The probability of the sample proportion falling between 0.2 and 0.42 is equal to the difference between the two calculated probabilities.
Alternatively, we can use the z-table to find the individual probabilities and subtract them. The z-table provides the cumulative probabilities up to a certain z-score. By subtracting the lower probability from the higher probability, we can find the desired probability.
In conclusion, the probability that the sample proportion is between 0.2 and 0.42 can be calculated using the standard normal distribution and z-scores. This probability represents the likelihood of observing a sample proportion within the specified range.
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shirabi spent $208 on a sewing machine to make purses. she spends a total of $10 on thread, fabric, and accessories for each purse and plans to charge $36 for each purse. the equation represents her break-even point, when x represents the number of purses sold. 208 10x
Shirabi needs to sell a minimum of 20 purses in order to reach her break-even point, where her total revenue equals her total costs.
To find the break-even point, we need to determine the number of purses that Shirabi needs to sell in order to cover her costs and not incur any loss. The equation representing her break-even point is given as:
208 + 10x
Here, 208 represents the cost of the sewing machine, and 10x represents the total cost of thread, fabric, and accessories for each purse, multiplied by the number of purses sold.
To find the break-even point, we need to set the equation equal to zero:
208 + 10x = 0
Now, let's solve for x:
10x = -208
x = -208/10
x = -20.8
Since the number of purses sold cannot be negative, we can disregard the negative solution. Therefore, Shirabi's break-even point is when she sells 20 purses.
Shirabi needs to sell a minimum of 20 purses in order to reach her break-even point, where her total revenue equals her total costs. Selling fewer than 20 purses would result in a loss, while selling more than 20 purses would generate a profit.
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*WILL GIVE BRAINLIEST*
These are complementary angles. Find the angle value of x
A: 30°
B: 17°
C: 73°
D: 100°
PS. it's not 30. i tried and got it incorrect :(
The transformation from the green triangle to the red triangle can be called a "reflection across the y-axis."
Draw the a purple line on top of the y-axis and label it "Line of Reflection"
Compare the ordered pair for A to the ordered pair for A' (which is read as "A prime").
Use a sentence to explain what changed and what stayed the same.
The x-coordinates changed awhile the y-coordinates stayed the same
What is reflection over y-axis?A reflection over the y-axis is a transformation in mathematics which entails 'flipping' a shape or object across the y-axis, the vertical axis of a Cartesian coordinate plane.
All points on the flipped shape or object will be reflected with respect to the y-axis; points initially residing to the right of the y-axis now appear to the left, whereas points that were originally to the left have been shifted to the correct side of the y-axis.
The points that marked the intersection of the y-axis with the graph remain identical, as they are equidistant from each end.
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Not a question but need help. Check out the image.
Answer:
well you need to have your friends personal email then login to you email and press new message once your logged in put in you friends email and you are all set
Step-by-step explanation:
25 POINTS AND BRAINLIEST
NO EXPLANATION NEEDED JUST ANSWER
Answer: 35.
Step-by-step explanation: 33 + 34 + 35 is 102. Your 35 is the largest of the three.
A hockey game had 2,058 fans Friday night. The baseball game has 1,300 fans that night. How many more fans were at the hockey game?
Subtract the number at the baseball game from the hockey game:
2058 - 1300 = 758
There was 758 more people at the hockey game.
Answer:
758 more fans were there
Step-by-step explanation:
Difference = Hockey fans - Baseball fans
= 2058 - 1300
= 758